* attachInterrupt(A, B, C)* A can be either 0 or 1 for interrupts on pin 2 or 3.** B Name of a function you want to execute while* in interrupt A.** C Trigger mode of the interrupt pin. can be:* LOW a low level trigger* CHANGE a change in level trigger* RISING a rising edge of a level trigger* FALLING a falling edge of a level trigger** In all but the IDLE sleep modes only LOW can be used.